My transaction log backup today took longer time to complete than usual. Daily it runs at 1:00PM for about 2 mins and today it took like almost 2 hours. Also for a few databases the size of backup is almost equivalent to size of the full backup.
Index rebuilds ran since the last log backup.
Backing up the log once a day is pretty worthless. If a full day of data loss is permitted you might as well go simple recovery and not worry about the log.
Please read through this - Managing Transaction Logs
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)SQL In The Wild
: Discussions on DB performance with occasional diversions into recoverability
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